New Delhi: Protests in Delhi and Noida turned violent on Thursday as the all India strike called by trade unions enters second day. Even on the first day of strike, violent protests in the form of burning of vehicles and stone pelting on commercial establishments were reported. Security has been beefed up in the region to prevent any untoward incident.

A flash mob attacked at least eight factories in the capital on Thursday during the final day of a two-day nationwide strike called by major trade unions, police said.

Hundreds raising slogans against the government's economic policies suddenly attacked the garment factories in the Okhla industrial estate in south Delhi.

Police detained some of the attackers."The situation is now under control," Additional Commissioner of Police Ajay Chaudhary said.

Violent protests in Noida were reported on early Thursday from sector 62 and 63 where some of the commercial buildings were targeted by protesters. A total of 80 people have so far been arrested during two days of violence. On Wednesday nearly half dozen people reportedly sustained injuries during protests. Security cover has been tightened in most parts of the city to prevent further violence and addition companies of security forces have been deployed.

Amid this, the workers of auto sector companies like- Maruti, Suzuki and Hero Corp have also announced to join strike from Thursday.